Important question?

I had a question tht student who had failed says that institute had given less results. Many says that they prepared well but still could not clear.Even i got failed this time. On a close introspection i find that i was wrong. My question to all my friends that we always complete the course 2-3 times ,how many of us prepare for those 3 hours. those three hrs make a huge difference.This is my view other views are welcomed